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Title:
BINDER RESIN COMPOSITION FOR TONERS
Document Type and Number:
WIPO Patent Application WO/2019/004095
Kind Code:
A1
Abstract:
The present invention relates to: a binder resin composition which enables the achievement of a toner that exhibits remarkably excellent fixability on a polypropylene film; a toner for developing electrostatic images, which contains this binder resin composition; and the like. (1) A binder resin composition for toners, which contains an amorphous polyester resin that has a constituent part derived from a polyester resin and a constituent part derived from a modified polypropylene polymer A having a carboxylic acid group or a carboxylic acid anhydride group, with the constituent part derived from a polyester resin and the constituent part derived from a modified polypropylene polymer A being connected to each other via a covalent bond, and wherein: the polymer A is a polypropylene polymer that is terminally modified by a carboxylic acid compound having an unsaturated bond or an anhydride of the carboxylic acid compound; and the amount of the constituent unit derived from the polymer A in the polyester resin is from 8 parts by mass to 30 parts by mass (inclusive) relative to 100 parts by mass of the total of the carboxylic acid component and the alcohol component forming the constituent part derived from a polyester resin. (2) A toner for developing electrostatic images, which contains a binder resin composition set forth in (1).

Inventors:
WAKABAYASHI, Yuki (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
YAMAMOTO, Taiki (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
Application Number:
JP2018/023878
Publication Date:
January 03, 2019
Filing Date:
June 22, 2018
Export Citation:
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Assignee:
KAO CORPORATION (14-10, Nihonbashi Kayabacho 1-chome Chuo-k, Tokyo 10, 〒1038210, JP)
International Classes:
G03G9/087; C08G63/02; C08G81/02; C08L67/00
Foreign References:
JP2006098804A2006-04-13
JP2005316378A2005-11-10
JPH07114209A1995-05-02
JPH07114208A1995-05-02
JP2014232168A2014-12-11
JP2016045421A2016-04-04
JP2008158276A2008-07-10
Attorney, Agent or Firm:
KATAOKA, Makoto et al. (OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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